Anatomy-Physiotherapy-logo

  • Italiano (Italia)
  • Français (France)
  • Portuguese (PT)
  • Deutsch (Deutschland)
  • Spanish (ES)
  • English (UK)
New english website, click here ->

           

  • Articles
    Evidence based articles
    • Musculoskeletal
      • Upper extremity
      • Lower extremity
      • Spine
    • Other
      • Nervous
      • Circulatory
      • Nutrition
      • Aging
      • Pain
      • Various
  • Art & Design
    Anatomy related art
  • Videos
    Webinars & more
  • Create account
    Personal pages & favourites
  • Login
    Login to A&P
Anatomy-Physiotherapy-logo
16 Mar2016

16 March 2016.

Written by SonoSkills
Posted in Wrist

16-03-2016 06:30:32
RVUanatomy
Image by: RVUanatomy

The pronator quadratus muscle in MSK ultrasound

This article, to be read in free full text in the URL provided below this post, provides the sonographer with information how to scan the pronator quadratus muscle, its standard reference values, anatomical variances, and the influence of sex and hand dominance, all visualized by MSK ultrasound.

The MSK ultrasound appearance of the pronator quadratus was evaluated. The patients hands were positioned in 90° supination with the wrist 5° to 10° extended and with the elbow flexed at 90°. The transducer was positioned perpendicularly against the volar surface of the examined distal forearm with minimal pressure. On the longitudinal image, the transducer was positioned along the flexor carpi radialis tendon (see image below). This image included the longitudinal section of the flexor carpi radialis, pronator quadratus, volar cortex of the radius, and, on the distal end of the image, the distal margin of the bony prominence attached to the pronator quadratus. 

The pronator quadratus is a square shaped muscle on the distal forearm that acts to pronate the hand. As it is on the anterior side of the arm, it is innervated by a branch of the median nerve, the anterior interosseous nerve (roots C8 and T1 with T1 being primary). Arterial blood comes via the interosseous artery. Its fibres run perpendicular to the direction of the arm, running from the most distal quarter of the anterior ulna to the distal quarter of the radius. It is the only muscle that attaches only to the ulna at one end and the radius at the other end. When the pronator quadratus contracts, it pulls the lateral side of the radius towards the ulna, thus pronating the hand. Its deep fibers serve to keep the two bones in the forearm bound together.

Video: Pronator quadratus muscle - Anatomy & location

Video: Pronator quadratus muscle

> From: Sato, J Ultrasound Med 33 (2016) 111-117. All rights reserved to American Institute of Ultrasound in Medicine. Click here for the Pubmed summary.

 
American Institute of Ultrasound in Medicine
Image by: American Institute of Ultrasound in Medicine

Tags: ultrasonography, sonography, ultrasound, wrist, pronator quadratus

Please log in or create an account to place comments. It's free and takes only a minute.

About the Author
SonoSkills
SonoSkills
SonoSkills provides musculoskeletal ultrasound (MSU) and anatomy training to primary healthcare professionals like physiotherapists, medical specialis...

Latest articles from this auhtor

  • Musculoskeletal ultrasound in a peroneal tendon tear
  • MSK ultrasound-guided myofascial trigger point injection.
  • Ultrasound elastography assessment of the supraspinatus
  • Quantitative MSK ultrasound of long head of biceps brachii
  • Neovascularity in patellar tendinopathy
 

 

Login

  • Forgot your password?
  • Forgot your username?
  • Create an account
AP banner Sono 1

Related

  • Ultrasound in rheumatoid arthritis.
  • Diagnostic performance and reliability of ultrasonography for fatty degeneration of the rotator cuff muscles.
  • Musculotendinous architecture of pathological supraspinatus: a pilot in vivo ultrasonography study.
  • Ultrasonographic assessment of carpal tunnel biomechanics. [free PhD. thesis]
  • Musculoskeletal ultrasound in a peroneal tendon tear

Sub Menu

  • Musculoskeletal
    • Upper extremity
      • Shoulder
      • Elbow
      • Wrist
      • Hand
    • Lower extremity
      • Hip
      • Knee
      • Ankle
      • Foot
    • Spine
      • Pelvis
      • Lumbar
      • Thoracic
      • Rib cage
      • Cervical
  • Other
    • Nervous
    • Circulatory
    • Nutrition
    • Aging
    • Pain
    • Various

Newsletter

Subscribe to our weekly newsletter to receive all articles of the week in your mailbox.

 

Partners

enraf nonius

apa

fontys

vpt

kiné care

ICMSU

  • Home
  • About
  • Team
  • Advertise
  • Contact
  • Terms of Service
  • Privacy Policy
  • Jobs
  • Newsletter archive
AP-SMALL-WHITECopyright 2010 - 2021 Anatomy & Physiotherapy. All Rights Reserved.

Privacy Policy

AdBlock detected

We want to keep offering top-notch content for free. In order to keep up with the additional costs that we incurr with scaling our website, we need your help! Please turn off your adblocker or consider donating a small amount.

http://www.anatomy-physiotherapy.com/donate

Close
You can also just close this popup. It shows only once.
isApp.it
  • Articles
    Evidence based articles
    • Musculoskeletal
      • Upper extremity
        • Shoulder
        • Elbow
        • Wrist
        • Hand
      • Lower extremity
        • Hip
        • Knee
        • Ankle
        • Foot
      • Spine
        • Pelvis
        • Lumbar
        • Thoracic
        • Rib cage
        • Cervical
    • Other
      • Nervous
      • Circulatory
      • Nutrition
      • Aging
      • Pain
      • Various
  • Art & Design
    Anatomy related art
  • Videos
    Webinars & more
  • Create account
    Personal pages & favourites
  • Login
    Login to A&P
You are now being logged in using your Facebook credentials